2012年计算机导论a卷2012年计算机导论a卷.doc

院、系领导 审批并签名 A卷 广州大学 学年第 学期考试卷 课程 计算机导论 考试形式（开卷/闭卷，考试/考查）学院 系 专业 班级 学号 姓名_ 题次 一 二 三 四 五 六 七 八 九 十 总分 评卷人 分数 评分 I. Multiple-Choice Questions (2*10=20 points) 1 2 3 4 5 6 7 8 9 10 D C D D C C C A C D 1. In the von Neumann model, the ______ subsystem serves as a manager of the other subsystems. ALU Input/output Memory Control unit 2. _______ separated the programming task from the computer operation tasks. Algorithms Data processors High-level programming languages Operating systems 3. If the ASCII code for E is 1000101, then the ASCII code for e is _____. 1000110 1000111 0000110 1100101 4. When you want to download music to a computer, the audio signal must be _____. Sampled Quantized Coded all of the above The precision of the fractional number stored in a computer is defined by the ___. sign exponent mantissa any of the above 6. For an 8-bit allocation, the smallest decimal number that can be represented in two’s complement form is ____. A. -8 B. -127 -128 -256 7. The IP address is currently _______bits in length. 4 8 32 Any of the above 8. Use a _____ search for an unordered list. A. sequential B. binary C. bubble D. insertion 9. ________ is a process in which an algorithm calls itself. A. Insertion B. Searching C. Recursion D. Iteration 10.To prevent _______, an operating system can put resource restrictions on processes. A. starvation B. synchronization Paging deadlock II. Calculations.(10*3=30 points) 1. Change the following decimal numbers to 8-bit unsigned integers if possible. 23 B. 121 2. Using a 16-bit allocation, first convert each of the following numbers to two’s complement, do the operation, and then convert the result to decimal. A. 161+1023 B. 161-1023 3. A multiprogramming operating system uses paging. The available memory is 60MB divided into 15 pages, each of 4MB. The first program needs 13 MB. The second program